The Overlap of Migraine and Transient Global Amnesia: A Case Report and Literature Review on the Concept of "Migramnesia"
Abstract
Introduction: The pathophysiological relationship between migraine and transient global amnesia (TGA) remains unclear. We present a case of TGA occurring temporally with a migraine attack and review the existing literature on this potential association, sometimes termed "migramnesia."
Case presentation: A 58-year-old man with a history of episodic migraine with aura experienced a severe typical migraine headache. Approximately 3 h after onset, he awoke with profound anterograde and retrograde amnesia lasting 3 h, meeting clinical criteria for TGA. He had no recollection of the amnestic episode or the preceding headache. Brain MRI was unremarkable.
Conclusion: This case adds to the limited number of reports describing a temporal link between migraine and TGA events. A review of the literature reveals conflicting evidence regarding migraine as a risk factor for TGA recurrence. While our case and some studies suggest a plausible association, the evidence is inconsistent. This case highlights the need for further research, including rigorous prospective studies and analyses of potential migraine-related subgroups within TGA populations, to clarify any underlying pathophysiological connections.
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Evidence Hub reads this as a case report, done in people. Its evidence level is 5 of 5 (Very low · case / narrative / animal / in vitro / in silico). Case reports, narrative reviews, and animal, cell or computer-model studies give the weakest evidence for human health.
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